I got that.lol I meant which wire. Is it safe to just leave the knob cranked up and just put a switch on the power or ground? Or do I need to put the switch in one of the 3 motor wires? Maybe one of the 3 smaller wires from the servo tester? I dont want to fry anything. This is the second time ive posted to this forum and nobody ever really seems to have a straight answer. All I need to do is turn a 3 phase motor on and off via a switch. That doesnt seem like it should be this complicated. How can this many people on an RC forum not know how to do that?